Which expression has a value of 18 when n=7?

Mathematics

2 answers:

Lorico [155]3 years ago

8 0

Hello There!

I'm sure it is B. 6n - 24

Hope This Helps You!
Good Luck :)

- Hannah ❤

snow_lady [41]3 years ago

6 0

Check all the options by plugging n = 7

50 - 3(7) = 50 - 21 = 29 (not possible)

6(7) - 24 = 42 - 24 = 18 (possible)

So correct option is B

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Match each product of powers with its simplified expression.

Galina-37 [17]

Answer:

multiplication

Step-by-step explanation:

928

8292

92229

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28282

6 0

3 years ago

3. Write an equation for the line that is perpendicular to the given line and that passes through the given point. y = 4x + 1 (1

asambeis [7]

Answer:

D. y = -1/4x + 3

Step-by-step explanation:

If the line is perpendicular, it will have a opposite reciprocal slope.

So, the slope will be -1/4.

Plug in this slope and the given point into y = mx + b, and solve for b:

y = mx + b

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Plug in the slope and y intercept into y = mx + b

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So, the correct answer is D. y = -1/4x + 3

8 0

3 years ago

Read 2 more answers

Solve the system of equations by graphing. Check your solution.<br><br> 5x+y=14<br> 2x-y=7

Fudgin [204]

ANSWER

(3,-1)

EXPLANATION

The given system of equations is :

5x+y=14

2x-y=7

For the first equation when x=0,

5(0)+y=14

y=14

The y-intercept is (0,14).

When y=0, 5x+0=14

$x = \frac{14}{5} = 2 .8$

The x-intercept is (2.8,0).

We plot the intercepts and draw a straight line through them to obtain the graph of 5x+y=14 as shown in the attachment.

We repeat the same process for the second equation 2x-y=7.

The intercepts are (0,-7) and (3.5,0)

The solution to the system is the point of intersection of the two straight lines.

The two straight lines intersected at

(3,-1)

Hence x=2, y=-1